Overview
The SN65LVDS20DRFTG4, produced by Texas Instruments, is a high-speed differential receiver and driver integrated into a single device, functioning as a repeater. This component is designed to operate with low-voltage positive-emitter-coupled logic (PECL) and low-voltage differential signaling (LVDS) at high signaling rates. It is particularly useful for applications requiring signal amplification and translation between PECL and LVDS formats.
The device supports supply voltages of 2.5 V or 3.3 V and is characterized for operation over a temperature range of -40°C to 85°C. It features a small 2-mm x 2-mm no-lead package, making it suitable for space-constrained designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2.375 | 2.5 or 3.3 | 3.6 | V |
| Input Voltage (VI) | -0.5 | - | VCC + 0.5 | V |
| Output Voltage (VO) | -0.5 | - | VCC + 0.5 | V |
| Differential Input Voltage Magnitude (|VID|) | 0.08 | - | 1 | V |
| High-Level Input Voltage, EN (VIH) | 0 | - | 2 VCC | V |
| Low-Level Input Voltage, EN (VIL) | 0 | - | 0.8 | V |
| Operating Free-Air Temperature (TA) | -40 | - | 85 | °C |
| Differential Propagation Delay Time (tPLH, tPHL) | 300 | 450 | 630 | ps |
| Differential Output Voltage Magnitude (|VOD|) | 247 | - | 454 | mV |
| Supply Current (ICC) | 19 | - | 24 | mA |
Key Features
- High-speed differential receiver and driver connected as a repeater.
- Supports 2.5-V or 3.3-V supply operation.
- Accepts low-voltage PECL inputs and provides LVDS or PECL outputs.
- Signaling rates up to 4 Gbps and clock rates up to 2 GHz.
- PECL-to-LVDS translation with output transition times of 120 ps.
- Data or clock signal amplification with less than 45 ps total jitter and less than 630 ps propagation delay times.
- Differential signal path for low radiated emissions and minimal added jitter.
- Outputs designed to drive differential transmission lines with nominally 100-Ω characteristic impedance.
- Voltage reference (VBB) provided for receiving single-ended PECL input signals.
- Small 2-mm x 2-mm no-lead package.
Applications
- High-speed data transmission systems.
- Telecommunication equipment.
- Data centers and server systems.
- High-performance computing.
- Networking and Ethernet applications.
- Signal amplification and translation in various digital systems.
Q & A
- What is the primary function of the SN65LVDS20DRFTG4?
The SN65LVDS20DRFTG4 functions as a high-speed differential receiver and driver connected as a repeater, accepting low-voltage PECL inputs and providing LVDS or PECL outputs.
- What are the supported supply voltages for this device?
The device supports 2.5-V or 3.3-V supply operation.
- What are the maximum signaling rates and clock rates supported by this device?
The device supports signaling rates up to 4 Gbps and clock rates up to 2 GHz.
- What is the typical output transition time for this device?
The output transition time is typically 120 ps.
- What is the total jitter and propagation delay time for this device?
The total jitter is less than 45 ps, and the propagation delay time is less than 630 ps.
- What is the characteristic impedance of the differential transmission lines driven by this device?
The outputs are designed to drive differential transmission lines with nominally 100-Ω characteristic impedance.
- What is the operating temperature range for this device?
The device is characterized for operation from -40°C to 85°C.
- What package type is used for the SN65LVDS20DRFTG4?
The device is packaged in a small 2-mm x 2-mm no-lead package.
- Does the device provide a voltage reference for receiving single-ended PECL input signals?
Yes, the device provides a voltage reference (VBB) typically 1.35 V below VCC for receiving single-ended PECL input signals.
- What are some common applications for the SN65LVDS20DRFTG4?
Common applications include high-speed data transmission systems, telecommunication equipment, data centers, high-performance computing, and networking and Ethernet applications.
